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Mechanical seals are a manufacturing device intended to prevent leakage in a vessel where a rotating shaft travels through a wall. They are a key part of the manufacturing process and are thought to have been invented by George Cooke in 1923, for use in refrigeration compressors.

Why use specific materials to make mechanical seal facings?’

Mechanical seals are a collection of components whose aim it is to prevent leakages from a vessel or machine. Seals serve a wide range of functions, and plug an array of liquids. Therefore, they need to be manufactured from a diverse range of materials.